* WHAT...South winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...In California, Modoc and Northeast Siskiyou and Northwest Modoc Counties Counties. In Oregon, Central and Eastern Lake, Klamath Basin, and Northern and Eastern Klamath and Western Lake Counties. Winds will be strongest near Summer Lake on Highway 31. * WHEN...From 10 PM this evening to 4 PM PST Friday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Highways running west to east will be exposed to tough driving conditions given the strong southerly wind speeds.